mirror of
https://github.com/firestar5683/StarPilot.git
synced 2026-07-11 12:22:14 +08:00
Dean Lee
f70a79b838
* use cstring instead of string.h * use cstdio instead of stdio.h * remove inttypes.h * use cstdlib instead of stdlib.h * use cstdint instead of stdint.h * #include <cstddef> * cstdlib * use cmath * remove stddef.h * use cassert * use csignal * use ctime * use cerror * rebase master old-commit-hash: c53cb5d570adb82bc454fcabab458d7e7f09738c
33 lines
939 B
C++
33 lines
939 B
C++
#include "selfdrive/common/gpio.h"
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#include <fcntl.h>
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#include <unistd.h>
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#include <cstring>
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#include "selfdrive/common/util.h"
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// We assume that all pins have already been exported on boot,
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// and that we have permission to write to them.
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int gpio_init(int pin_nr, bool output){
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char pin_dir_path[50];
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int pin_dir_path_len = snprintf(pin_dir_path, sizeof(pin_dir_path),
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"/sys/class/gpio/gpio%d/direction", pin_nr);
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if(pin_dir_path_len <= 0){
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return -1;
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}
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const char *value = output ? "out" : "in";
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return util::write_file(pin_dir_path, (void*)value, strlen(value));
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}
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int gpio_set(int pin_nr, bool high){
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char pin_val_path[50];
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int pin_val_path_len = snprintf(pin_val_path, sizeof(pin_val_path),
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"/sys/class/gpio/gpio%d/value", pin_nr);
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if(pin_val_path_len <= 0){
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return -1;
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}
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return util::write_file(pin_val_path, (void*)(high ? "1" : "0"), 1);
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}
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